Factorise 81 x 2-49 y 2A- 9 x-7 y9 x-7 yB- 9 x-7 y9 x-7 yC- 9 x-7 y9 x-7 yD- 3 x-7 y3 x-7 y

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Visualisation of Factorisation

Factorise 81 ...

Question

Factorise $81 x^{2} - 49 y^{2}$ .

(9x - 7y)(9x + 7y)

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(9x + 7y)(9x + 7y)

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(9x - 7y)(9x - 7y)

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(3x - 7y)(3x + 7y)

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Solution

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